HomeMy WebLinkAboutACSA201100095 Review Comments 1993-02-16 ,
COUNTY OF ALBEMARLE
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MEMORANDUM E-;ann!;ng Dep.
TO: Wayne Cilimberg - Director of Plan ' & Community Development
FROM: Jack M. Kelsey, PE - Civil Engineer
DATE: February 24, 1993
RE:
Jurisdictional Area Request - Tax Map 79 Parcel 19
As requested this Department has reviewed the analysis of the drinking water sampled from
the above referenced private well and the technical grounds for support of an extension to the
ACSA jurisdictional area.
Sampling and testing of this well indicated unacceptable coliform bacteria levels. According
to the Thomas Jefferson Health Department this type of contamination is very common
(especially in older wells) and is a problem they deal with on a daily basis. Very rarely is
the groundwater the source of this type of contamination. Bacteria contamination is
generally due to intrusion of surface runoff into the well as a result of poor installation or (in
the case of old wells) the standards utilized at that time.
The Health Department utilizes a four step procedure for recommending a resolution to these
problems. The first recommendation is to protect the wellhead from the intrusion of surface
runoff, chlorinate and flush the well to remove the bacteria from the stored water as well as
the liner and appurtences, and then test the water. Should these measures fail to correct the
contamination, the second recommendation is to install a new well in accordance with present
standards. If bacteria contamination continues to persist, installation of a chlorination system
is then recommended. Lastly, for the rare case when all options fail, the Health Department
will recommend the owner apply for extension of the ACSA jurisdictional area.
As a policy the County has discouraged extension of ACSA jurisdictional areas in other than
County designated growth areas, unless public health and safety is endangered. This site is
not located within a County designated growth area.
Wayne Cilimberg
February 24, 1993
Page 2
The scope of the sampling and testing of this well was limited to the determination of the
water quality in the present condition of the well and are not conclusive evidence that the
well is a danger to public health and safety.
Extension of the ACSA jurisdictional area is not adequately justified until disinfection,
remedial measures to eliminate the source of the contamination, and/or the other options
described above are attempted and failed. Therefore, at this time the Engineering
Department cannot support this request.
JMK/
CC: Jo Higgins - Director of Engineering
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COUNTY OF ALBEMARLE
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MEMORANDUM
TO: Ms. Jo Higgins, Director of Engineering
FROM: V. Wayne Cilimberg, Director of Planning & Community Development 6/
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DATE: February 16, 1993
RE: Jurisdictional Area Request - David Booth
The attached has been received from Applied Technology and Engineering on
behalf of David Booth regarding a well located on Mr. Booth's property on
Route 250 East. Mr. Booth sought this analysis as justification for his
request to receive Albemarle County Service Authority Jurisdictional Area
designation for water only. As you can see, the tests of the existing on-site
well indicate no petroleum hydrocarbons, but an unacceptable level of bacteria
for drinking water. I would appreciate your Department's review and comment
regarding this analysis as technical grounds for granting the jurisdictional
area request. I would appreciate your response by Wednesday, February 24,
1993. Much thanks for your cooperation.
VWC/blb
Applied Technology and Engineering, P.C.
1115 5th Street S.W.
Charlottesville, Virginia 22902-6465
Phone: (804) 977-1498 RECEIVED
Fax: (804) 977-6778
FEB 0 3 1993
January 28, 1993
Mr. David Booth
F1 ''nr yn,,. Dept.
Tattershall Farm
Route 3 Box 188
Charlottesville, VA 22903
Re: Sampling of well located on Tax Map 79 Parcel 19; Albemarle County, Virginia
Dear Mr. Booth:
At your request, Applied Technology and Engineering. P.C. (AT&E) conducted sampling of the
well located on Tax Map 79 Parcel 19; Albemarle County,Virginia.
The primary objective of the sampling was to determine if there was evidence that the well has been
impacted by a release of petroleum products on the adjacent property.
AT&E personnel visited the site on January 25, 1993 to conduct the sampling. Prior to sampling,
data on the well was obtained. The depth to water was 8.6 feet. The depth of the well was 75
feet. The diameter of the casing was 6 inches. The length of the casing is unknown. The well is
not currently being used. A sample was obtained from the well. Since the well has been idle, a
pump down of the well was conducted and an additional sample was taken. The objective of the
pump down was to establish a flow in the idle well and was not meant to assess the yield of the
well.
Since the well was larger and deeper than anticipated, the pump down test was somewhat limited.
At a pumping rate of approximately 11 GPM the water depth dropped to approximately 27 feet and
remained at that depth over a three hour pump cycle.
The samples were analyzed for total petroleum hydrocarbons (TPl-I) and Coliform. The coliform
tests were run to determine if the level of bacteria was acceptable as drinking water quality. The
results are as follows:
ANALYSES OF WATER SAMPLES
WELL ON T.M. 79-19 ALBEMARLE COUNTY
Sample TPH, mg/I Coliform, total
Initial 0 fail
a`ter pump down 0 fail
Based on this testing there is no indication that the well has been impacted by the release on the
adjacent property. Additional testing would be required to determine if there was a hydraulic
connection between the contamination on the adjacent property and the well on this property. The
bacteria testing indicates that the water quality is not acceptable for drinking water.
Let us know if you have any questions or comments or require any further assistance.
Sincerely,
John R.Walenten, Vice President
Environmental Management and
Regulatory Compliance